Class Variable Issue

[jcavard]

Question 1:
Hi! I have an application that loads tons of picture into a listview. While it'S loading, the images loaded in the listview tend to appears and disappears. I would like to know if there is anyway I can "Freeze" the window while the images load, then refresh it... so the user wouldn't see that "bug". It would also allow the user to do anything until it's loaded, to avoid memory crashes... Thank You!
_________________________________________________________________

Question 2:
My Application has to be French and English. So I thought I was going to load the table corresponding to the language selected and store the language string into String variable, like:

Public MENU_ABOUT As String = CStr(datarow(0)) ' which is "About..."
    Public MENU_ALWAYS_ON_TOP As String = CStr(datarow(1)) ' which is "Always on Top"
    ...

And I assign the Vakue to the component at runtime...

'
        'mnuFile
        '
        Me.mnuFile.Enabled = CType(resources.GetObject("mnuFile.Enabled"), Boolean)
        Me.mnuFile.Index = 0
        Me.mnuFile.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.mnuNewCollection, Me.mnuProperties, Me.mnuPrint, Me.mnuPrintSetup, Me.MenuItem13, Me.mnuImportFiles, Me.MenuItem14, Me.mnuMainExit})
        Me.mnuFile.Shortcut = CType(resources.GetObject("mnuFile.Shortcut"), System.Windows.Forms.Shortcut)
        Me.mnuFile.ShowShortcut = CType(resources.GetObject("mnuFile.ShowShortcut"), Boolean)
        Me.mnuFile.Text = [B]MENU_FILE[/B]  
        Me.mnuFile.Visible = CType(resources.GetObject("mnuFile.Visible"), Boolean)

But I get Warning (it's not error because I still can run the application). I atached a screenshot. Why do I have all this saying "The variable is either undeclared or was never assigned" when THEY ACTUALLY ARE DECLARED AND ASSIGNED in module called LANG.

Thank You!

[Mr.No]

I think its a problem of scope. I think you should declare your constants as Shared variables in a module and refer to them by prefixing the modulename. i.e

Public Class Globals
 public Shared  MENU_FILE As String
 public Shared  MENU_BLABLA As String
 Public Shared SetLanguage()
     If French Then
       ' assign texts here
        MENU_FILE = "Fichier"
     Else
     End If
 End Sub
End Class

Then in the normal code use

Me.mnuFile.Text = Globals.MENU_FILE

[jcavard]

I made a class, with the var members and the initiating sub, but I still get the same Warning.

Public Class Lang
 
    ' STATUS BAR MESSAGE
    Public Shared STATUS_VIEWING_COLLECTION As String
    Public Shared STATUS_VIEWING_COLLECTION_NONE As String
    Public Shared STATUS_VIEWING_IMAGE_OF_NONE As String
    Public Shared STATUS_VIEWING_IMAGE_OF As String
    ' MSGBOX STRING
    Public Shared MSGBOX_REGKEY As String
    Public Shared MSGBOX_REGKEY_SUCCESSFUL As String
    Public Shared MSGBOX_ERROR As String
    Public Shared MSGBOX_ERROR_BLANK_LABEL As String
    Public Shared MSGBOX_ERROR_WRONG_LABEL As String
    Public Shared MENU_ABOUT As String
    Public Shared MENU_ALWAYS_ON_TOP As String
    Public Shared MENU_COPY As String
    Public Shared MENU_CUT As String
    Public Shared MENU_DELETE_IMAGE As String
    Public Shared MENU_DSD_WEB As String
    Public Shared MENU_EDIT As String
    Public Shared MENU_EXIT As String
    Public Shared MENU_FILE As String
    Public Shared MENU_FIND As String
    Public Shared MENU_HELP As String
    Public Shared MENU_HELP_TOPIC As String
    Public Shared MENU_IMPORT_FILES As String
    Public Shared MENU_NEW_COLLECTION As String
    Public Shared MENU_OPTIONS As String
    Public Shared MENU_PASTE As String
    Public Shared MENU_PRINT As String
    Public Shared MENU_PRINTER_SETUP As String
    Public Shared MENU_PROPERTIES As String
    Public Shared MENU_README_FILE As String
    Public Shared MENU_STATUS_BAR As String
    Public Shared MENU_TOOLBAR As String
    Public Shared MENU_TOOLS As String
    Public Shared MENU_VIEW As String
 
    Public Shared Sub setLang()
        STATUS_VIEWING_COLLECTION = "Viewing subject: "
        STATUS_VIEWING_COLLECTION_NONE = "Viewing subject: <none>"
        STATUS_VIEWING_IMAGE_OF_NONE = "Image X of Y"
        STATUS_VIEWING_IMAGE_OF = "Image {0} of {1}"
        MSGBOX_REGKEY = "Registry"
        MSGBOX_REGKEY_SUCCESSFUL = "Registry edited successfully"
        MSGBOX_ERROR = "Error"
        MSGBOX_ERROR_BLANK_LABEL = "Invalid tree node label." + Microsoft.VisualBasic.ControlChars.Cr + "The label cannot be blank"
        MSGBOX_ERROR_WRONG_LABEL = "Invalid tree node label." + Microsoft.VisualBasic.ControlChars.Cr + "The invalid characters are: '@','.', ',', '!'"
        MENU_ABOUT = "About..."
        MENU_ALWAYS_ON_TOP = "Always on Top"
        MENU_COPY = "Copy"
        MENU_CUT = "Cut"
        MENU_DELETE_IMAGE = "Delete Image"
        MENU_DSD_WEB = "DSD on the Web"
        MENU_EDIT = "Edit"
        MENU_EXIT = "Exit"
        MENU_FILE = "File"
        MENU_FIND = "Find"
        MENU_HELP = "?"
        MENU_HELP_TOPIC = "Help Topics"
        MENU_IMPORT_FILES = "Import Files..."
        MENU_NEW_COLLECTION = "New Collections"
        MENU_OPTIONS = "Options..."
        MENU_PASTE = "Paste"
        MENU_PRINT = "Print..."
        MENU_PRINTER_SETUP = "Printer Setup..."
        MENU_PROPERTIES = "Properties"
        MENU_README_FILE = "'ReadMe' File"
        MENU_STATUS_BAR = "Status Bar"
        MENU_TOOLBAR = "Toolbar"
        MENU_TOOLS = "Tools"
        MENU_VIEW = "View"
    End Sub
End Class

and this to set the var

Public Sub New()
        MyBase.New()
 
        'Cet appel est requis par le Concepteur Windows Form.
        InitializeComponent()
        [B]Lang.setLang()[/B]
        'Ajoutez une initialisation quelconque après l'appel InitializeComponent()
 
    End Sub
        'mnuFile
        '
        Me.mnuFile.Enabled = CType(resources.GetObject("mnuFile.Enabled"), Boolean)
        Me.mnuFile.Index = 0
        Me.mnuFile.MenuItems.AddRange(New System.Windows.Forms.MenuItem() {Me.mnuNewCollection, Me.mnuProperties, Me.mnuPrint, Me.mnuPrintSetup, Me.MenuItem13, Me.mnuImportFiles, Me.MenuItem14, Me.mnuMainExit})
        Me.mnuFile.Shortcut = CType(resources.GetObject("mnuFile.Shortcut"), System.Windows.Forms.Shortcut)
        Me.mnuFile.ShowShortcut = CType(resources.GetObject("mnuFile.ShowShortcut"), Boolean)
        Me.mnuFile.Text = Lang.MENU_FILE 'resources.GetString("mnuFile.Text")
        Me.mnuFile.Visible = CType(resources.GetObject("mnuFile.Visible"), Boolean)

[RobDog888]

You could do this.

Me.ListView1.BeginUpdate()
'Do stuff
Me.ListView1.EndUpdate()

[jcavard]

thanks robdogg!! ReallY!

[RobDog888]

What if you change the order in which its called?

Public Sub New()
        MyBase.New()
 
        'Cet appel est requis par le Concepteur Windows Form.
        Lang.setLang()
        InitializeComponent()
        'Ajoutez une initialisation quelconque après l'appel InitializeComponent()
 
    End Sub

[jcavard]

same thing... I get an error saying Lang.MENU_FILE is not declared ...